Ostrich eggshells are excellent examples of avian biomineralization. Interest in these is focused on their potential as a food source, example biomaterial for medical and industrial applications, the use fossil remains paleoenvironmental reconstructions. Due to this interest, there some information about aspects eggshell biomineralization, but it scattered different publications limited scope m...

Today, with emphasis on the mechanical heart and heart transplantation from one human to another andone species to another, a knowledge of the anatomy of the bird’s heart could contribute to theseaccomplishments. Eight male adult ostriches were used to study the heart macroscopically. This studyrevealed that the ostrich heart has some different features from the other birds. In the ostrich, fib...

The aim of the present study was morphological and histochemical analysis of the lacrimalgland (LG) in African black ostrich Struthio camelus domesticus in the embryonic and postnatalperiod. Studies were conducted on 50 ostriches aged between the 28th day of incubation until7 months old. Tissue sections were stained with haematoxylin and eosin, Azan trichrome,periodic acid-Schiff, Alcian blue p...

The flexibility and posture of the neck in sauropod dinosaurs has long been contentious. Improved constraints on sauropod neck function will have major implications for what we know of their foraging strategies, ecology and overall biology. Several hypotheses have been proposed, based primarily on osteological data, suggesting different degrees of neck flexibility. This study attempts to assess...

̇ ̇ Ž . Ž . We measured oxygen consumption V and carbon dioxide emission V rates, air-cell gas partial pressures of O CO 2 2 Ž . Ž . Ž oxygen P O and CO P CO , eggshell water vapour conductance and energy content of the ostrich Struthio A 2 2 A 2 ̇ . Ž . camelus egg, ‘true hatchling’ and residual yolk, and calculated RQ and total oxygen consumption V for ostrich O tot 2 ̇ eggs incubated at 36.5 C a...